Circuit-closing device for speed-indicators.



APPLIOATION FILED JUNE 20,1901.

PATENIEIU SEPT. 11, 1906.

3 SHEETS-SHBET 1.

PATENTED SEPT. 11, 1906. H. DAHL. CIRCUIT CLOSING DEVICE FOR SPEEDINDICATORS.

APPLICATION FILED JUNE 20,1901.

3 SHEETS-$11335." 2

PATENTED SEPT. 11, 1906. H. DAHL. CIRCUIT CLOSING DEVICE FOR SPEEDINDICATORS ADPLIOATION FILED JUNE-20, 1901.

a SHEETS-SHEET 3.

/IIIIIIIIIIIIIIII" UNITED STATES PATENT OFFICE.

HANS DAHL, OF BERLIN, GERMANY.

CIRCUIT-CLOSING DEVICE FOR SPEED-INDICATORS.

Specification of Letters Patent.

Patented Sept. 1 1, 1906.

Application filed June 20.1901. Serial No. 65,350.

act description.

My present invention relates to speed-indicators; and it has for one ofits objects to provide a body actuated by centrifugal force to close oneof several circuits, according to the s eed of the rotating body.

Ot er objects and advantages will appear in the following descriptionand will be particularly pointed out in the claims.

In the accompanying drawings four different embodiments of my inventionare represented.

Fi re 1 is a side elevation of a wheel rovide with one embodiment of myinventlon. Fig. 2 is a plan, and Fig. 3 is an end view, of a part of thedevice shown in Fig. 1, while Figs. 4, 5, and 6 represent three otherembodiments of my invention.

In the construction shown in Figs. 1 to 3 a casing b is secured to thewheel or rota bod a. uga ly-operated body 'e, which is kept in itsnormal position by a spring (1. In this construction the body e iscombined with a rod 0 and button f. When the wheel or body a is rotated,the body e will be moved by the centrifugal force toward the peripheryand compress the s ring (1. On the axle g, on which the wheeFa rotates,is mounted a fixed frame or support it, which carries at its top cud atransverse arm 1'. At both ends of this arm are provided forked pieces1c, in which are secured in pairs a number of late-springs Z. Each pairof these springs diverges to ward the ends secured in the forks When thebody 6 is moved in the casing Z) by the centrifugal force, the button fwill be moved at the normal. speed of the wheel between the lower pairof springs and in this manner close an electric circuit containing asignal device to be hereinafter described and which is thus operated. Ifthe velocity of the wheel increases, the body e will be moved furthertoward the periphery of the wheel and the button f will arrive betweenthe second pair of springs Z and close another circuit.

It Wlllg be seen that by providing further pairs ci 5 springs otherdegrees of vcl city may be indii pieces. arev arranged on cheeks n 0.

cated by the centrifugal force moving the button j. The rod c of thecontact device must of course be of such dimensions that when the buttonf closes the circuit betweenthe higher pairs of springs the rod can passthrough the lower pairs without closing the circuits. a

It is evidently not necessary to provide pairs of springs, as thesprings on the one side may be connected together so as to form a.single elastic plate, only thesprings on the.

other side being separate. Inorder to adjust the distance between the srings lwhere the button contacts therewit one of the forks k on thetransverse arms'i may be so mounted as to be held in its adjustment bythe friction-screw, such as the screw i. (Shown in Fig. 1.)

Fig. 4 shows another embodiment of the device forming the subject-matterof my invention. In this construction the cont%- 6 check 0 consists ofsome insulati material, and plates or contact-pieces p are at into it,

each of said plates being connected with a The other check 12. Each ofthese cheeks source of electricit forms the second po e.

v 0 n is secured to a spring g, carried in a suit- TlllS. casing 1)contains the centri n and one of the plates p on the check 0. The

cheeks, together with their springs, can be adjusted in this supporteither toward or awa from the periphery and the side of the whee Ifdesired, distance-piecc or the like may be I provided between the checksin order to keep theina sutlicient distance apart.

In Fig. 5 another construction is shown. In this a contact-piece f iscarried bythe us .l ring controlled rod 0 in the casing 12, wheel a, andthe contactieces elastically-supported c eeks, .cious construction. 'n 0re reks, each of which. is secure on block. The cheek 12 consists of eigle to which is elasticall Y connected,

together with the block of insu ating'material to which it is attached,to the su port'or frame o. This is done by means of tile bolts or screws:17, on which the spiral springs 10 are coiled. The other cheek carriesthe plates p. The plates are let into the check 0, which 18 secured to aplate .2 and kc tin its normal position by the springs A, coiled on thebolts B. By means of a screw (1 the distance of the check from the cheekn can be regulated.

.The whole cheek 0 can alsobe adjusted by in contact with the cheek nand either one of the plates p. By means ofa suitable casing tersPatent, is-

the springs of the jaws n 0 may be inclosed, and thus protected fromdust, &c.

In the construction shown in Fig. 6 there is no separate support orframe to carry the contactepieces p. These contact-pieces as will beseen, are let into and insulated rom the casing b and being broad orwide the contact will continue for some time-that is, will be of aduration suflicient to operate a signal continuously between two fixedspeed limits. Screws H on the i-contacts carry nuts J, which hold thecontacts in thecasing and between which circuit-wires of the conductorsK are held. These wires lead to brush-contacts L, supported in anysuitable manner by the rotating parts-and bearing against rin -contactsL on the axle or relatively fixed support which carries the signalingmechanism to preserve the continuity of the circuit, In Fig. 6 theconnection between the insulated contacts 1) with the casing b, whichforms the other contact,is effected by the ist'on e. The signalingmechanism prefera ly employed (see Fig.-6) .is adapted for allembodiments of my invention and consists of a series oflamps carr ed bya fixed support and each 1.11-

circuit with one of the ring-contacts' L ,which' are in circuit with thecontacts 1), Figs. 4, 5, and 6, or some of the'contacts Z, Figs. 1 to 3.The return of thebattery Z is the conductorM, which is likewiseconnected by a ring-contact L and a brush L to the other contacts Z,"

Figs. 1 to 3, cheeks n, Figs. 4 and 5, or casing 11, Fig. 6. i

What I claim, and desire to secure by Let- The con'ibination with of acontact rotating with and moving outwardly from the axis of the rotatingbody by centrifugal force, spring means 0 posing the movement of thecontact an electrical means for automatically indicating variouspositions of the contact accordingly to the speed of rotation. A

2. The combination with a rotating body of a water and dust proof casingmounted on and rotating with the rotating body, a contact movable in thecasing outwardly from the axis of the rotating body by centrifugalforce, spring means opposing the movement of this contact, and an'electrical contact mounted within the casing and adapted to be engagedby the movable contact-body.

3. In aspeed-indicator, the combination with a rotary body, of a closedcasing rotat ing with-the body, a lurality of contacts arrangedapproximate y radially to'the axis of the rotary body,electrically-operated siga rotating body,

naling devices,"a series of circuitscOnnecting with a rotary body, of aclosed casing rotat- I ing with the body, a plurality of contactsarranged ap roximate radially to the axis of the b0( y,electrically-operated signaling devices, a series of circuits connectingthe contacts with the signaling devices, a centrifi1gally-operatedsliding contact movable in the casing outwardly from the axis of therotary body to engage with the contacts and complete any one of theseries of circuits, and a spring opposing the movement in one directionof the centrifugally-operatedbody.

v 5. In. a speed-indicator, the combination with acentrifugally-operated contact movable outwardly from an axis, of acontact rotating with the centrifugally-operated contact and engaged bythe said centrifugallyoperated contact to establish an electricalcircuit.

6. In a speed-indicator, the combination with a centrifugally operatedcontact mo v' able outwardly from an axis, of a series of contactsrotating with the contact-body'and successively engaged by saidcentrifugallyoperated contact to establish a series of 7 electricalcircuits. 7. lnacircuit-closer,thecomblnation with a closed casing, of acentrifugally-operated sliding contact movable therein outwardly from anaxis, a spring mounted in the casing opposing the movement of thesliding. contact in one direction, and a series of contacts in the pathof the sliding contact 8. The combination with the closedcasing, of acentrifugally-operated sliding contact movable in the casing outwardlyfrom an axis, a spring mounted in the casing opposing the movement ofthe sliding contact device in one direction, and a series of broadcontacts or contacts of duration mounted in the path of the slidingcontact-body.

9. The combination with a rotary body, of a centrifugally-operated'contact-body carried by and moving outwardly from the axis of the rotarybody, electrically-operated signaling devices, a plurality of broadcontacts or contacts of duration connected to the signaling-devices, andmounted on the rotary body in the path of the centrifugallyoperated bodyto cause eachcontact to operate the signaling device continuouslybetween two fixed speed limits, and circuits connectingthe signalingdevices with the several contacts.

10. A rotary speed-indicator comprising in combination with a rotatingbody, a 'moving body driven outward from the-axis of the rotating bodyby centrifugal force and forning one electric contact-poi: ports, asignal on said fixed support'conteet-p0ies adapted to be en contact-polein such men of contact is established VIN/i; commencement and a d andelectrical signs r these contacts of duration rrrs that a ,hireiity ofgroups 0:? SP8 two de mite limits is indicated.

11. In a speed-indicator, ofja rotary support, a rei "ifitnessesz port,conductors fOlInilW' G. HERZBERG, and carried respectively my each ofsaid supi HENRY HAsPER mi said rotary sup ort for overning said lit andmovab e in dierent degrees eon according to the different speeds ofsupport, and means to preserve the con- 1 in witness whereof I hereuntosu scribe my signature in presence of two Witnesses.

HANS DAHL.

trailed by said circuit, mechanism mounted I5 tinuity of said circuitbetween said sugports. 2o

